Fludara, known generically as fludarabine, is a chemotherapy medication primarily used in the treatment of chronic lymphocytic leukemia (CLL) and some types of non-Hodgkin's lymphomas. It belongs to a class of drugs known as purine analogs, which work by interfering with the DNA synthesis of cancer cells, thereby inhibiting their growth and proliferation. Fludara can be administered intravenously or in tablet form, depending on the specific needs and condition of the patient. As with many chemotherapy drugs, Fludara can cause a range of side effects, including immunosuppression, which increases the risk of infections. It is crucial for patients receiving Fludara to be closely monitored by their healthcare provider for any adverse effects and for the effectiveness of the treatment.